US693596A - Draft and buffing rigging. - Google Patents

Description

No. 693,596. Patented Feb. l8, I902.

n. n. GALLAGHER, m. DRAFT AND BUFFING mama.

Agplica-tion filed Dec. 5, 1901.) (No Model.)

UNTTnn STATES ATENT OFFICE.

RICHARD D. GALLAGHER, JR., OF NEW YORK, N. Y., ASSIGNOR TO STANDARD COUPLER COMPANY, OF NElV YORK, N. Y., A CORPORATION OF NEW JERSEY. I

DRAFT AND BUFFING RIGGING.

SPECIFICATION formingpart of Letters Patent No. 693,596, dated. February 18, 1902.

Original application filed August 26, 1901, Serial No. 73,287. Divided and this application filed December 5, 1901. Serial No. 84,803. (No model.)

To all whom it may concern: 1, suitable stops, shoulders, or'the like being Be it known that I,RIOHARDD.GALLAGHER, provided thereon at 2 and between which the J12, of New York, in the county and State of rigging is mounted, as usual. The numeral 3 o NewYork,have inventedcertain newanduseindicates the draw-bar, and 4 the strap at- 5 ful Improvements in Draft and Buffing Rigtached thereto, these two parts constituting ging; and I do hereby declare the following to what I term the press ure-transmitting membe a full, clear, and exact description of the ber,and itis obvious that the particular consame, reference being had to the accompanystruction of the same is immaterial, just so it ing drawing, forming a part of this specificabe capable of transmitting the draft and buff- IO tion, and to the figures of reference marked ing strains to the rigging proper.

thereon. Follower-plates 5 5, adapted to seat against v The present application is a division of my the stops 2, are employed, and between these prior application, Serial No. 73,287, filed Aufollower-plates a spring or yielding resistance o0 gust 26, 1901, the device illustrated in the member and friction elements are arranged 15 present case being one of the species illusas follows: The spring 6 (or, if desired, two trated in said prior application; and the insprings arranged tandem, with a spring-plate vention consisting, broadly stated, in the em- 7 between them) bears at one end against one ployment of friction elements at one end only of the follower-plates and at the opposite end of the spring, said friction elements being so against a follower 8, havinginclined friction- 20 combined as to effectagreater range of movefaces 9 thereon, as shown. Surrounding the ment in the compression of the spring than follower 9 is the head 10 of a casing 11, said the range of movement of the draw-bar or head havinginclines 12, forming, with the inpressure-transmittingmemberitself,and with clines 9 and follower 5, angular chambers, in a casing or secondary pressure-transmitting which wedge-blocks 13 are located.

'25 member extending from said friction ele- The casing audits head in the present strucments to the opposite end of the spring,wl1ereture constitute the secondary pressure-transbys'aid pressLire-transmitting member will act mitting member, and the follower S preferdirectly on said friction elements under ably normally rests against shoulders in the strains in one direction and on said secondary head at 14:, whereby the proper relative posi- 3o pressnre-transmitting member and through it tions of the parts is maintained, and in the on said friction elements under strains in the preferred construction also aslight movement opposite direction. is allowed said secondary pressure-transmit- The invention further consists in certain ting member, as by having a small space 15 8o novel details of construction and combinabetween its end and the follower-plate atthe 3 5 tions and arrangements of parts, all as will be rear end of the spring.

now described, and pointed out particularly The spring is preferably inserted under a in the appended claims. slight normal compression, and in operation The accompanying drawing is a section under buffing strains the forward followerthrough a rigging embodying the present inplate is pushed inwardly against the wedge- 40 vention. blocks, causing them to travel down the in- The structure is designed for application clines of the secondary pressure-transmitting to the underframing of a car, the dimensions member and, acting upon the inclines of the preferably being such as to adapt it to the orfollower, advance the same in the direction of 0 clinary car-framin g and as a substitute for the draw-bar movement,thereby compressing the 4 5 ordinary draft-rigging. spring. Under draft strains the rear follower- In the illustration the car-framing is shown plate is advanced, and with it the secondary diagrammaticallyasindicatedby thenumeral pressore-transmitting member, which latter,

acting through the wedge-blocks and inclines, causes the follower at the forward end of the spring to move rearwardly, thereby compressing the spring. v

Under strains in both directions it will be noted that the range of spring compression is greater than the range of draw-bar movement, due to the fact that the draw-bar movement is supplemented by the movement due to the wedging action of the friction element-s. Thus there is no lost motion in setting the friction elements into active relation. In the preferred construction, however, the secondary pressure-transmitting member is made slightly short to insure the setting of the spring under the desired initial compression and to allow for a slight spring compression before the friction elements are caused to act.

Obviously the relative arrangement of the follower and secondary pressure-transmitting members may be reversed, said secondary pressure-transmitting member being shown as a casing-for the parts simply asa good mechanical construction well adapted for practical purposes, because easily constructed, of suflicient strength, and affording protection against dirt or injury through contact with external objects.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is.

1. In an apparatus designed to take up draft and buffing strains applied to opposite ends thereof through the medium of a pressure-transmitting member, the combination of a yielding pressure resisting member, a follower at one end of said yielding member and having inclined friction-faces, a longitudinallymovable secondary pressure -transmittingmemberhavinginclined friction-faces with connections between said secondary pressure-transmitting member and pressure-transmitting member whereby the former is moved longitudinally under strains in one direction, a stop for arresting its movement understrains in the opposite direction, a follower-plate and wedge-blocks located in the chambers between the inclined friction-faces and the followerplate; substantially as described.

2. In an apparatus of the class described, the combination of a secondary pressuretransmitting member having inclined frictibn-faces and movable in one direction with means for holding it against movement in the opposite direction, a follower having inclined friction-faces and movable in a direction opposite to the direction of movement of the secondary pressure-transmitting member, a yielding pressu re-resisting member cooperating with the follower, wedge-blocks located between said inclined friction-faceson" the follower and secondary pressure-transmittin g member, a follower-plate cooperating with said wedge-blocks and means for holding the follower-plate against movement away from the follower, whereby under strains applied to the follower-plate in one direction or to the secondary pressure-transmitting member in the opposite direction, the wedge-blocks will be moved transversely and the follower moved in a direction to compress the yielding member; substantially as described.

3. In an apparatus of the character specitied, the combination of the following instrumentalities, to wit oppositely-located followers movable toward each other but held against movement away from each other, a follower located adjacent one of said followerplates and having inclined friction-faces, a spring confined between said follower and the opposite follower-plate, a secondary pressuretransmitting member located between said plates and having inclined friction faces, wedge-blocks located between the followerplate and friction-faces on the follower and secondary pressure-transmitting member, respectively, and means whereby the opposite follower-plate and secondary pressure-transmitting member may be advanced in unison and the spring compressed from opposite ends, and whereby the advance of the follower-plate adjacent the follower, will compress the spring from one end; substantially as described.

4. In a draft-rigging the combination of fol lower-plates movable" toward each other,asecondary pressure-transmitting member located between and engaging one of the same and having inclined friction-faces adjacent the other of said plates, a follower located adjacent the latter plate and having inclined friction-faces thereon, wedge-blocks located in the chamber between said plate and inclined faces whereby upon inward movement of either of said plates the follower will be moved in one direction, and a spring confined between said follower and the opposite followerplate; substantially as described.

5. In a draft and buffing rigging, the combination with followenplates movable toward each other, stops for limiting their outward movement, and a follower located adjacent one of said plates, and having inclined friction-faces, of a spring confined between said follower and the opposite plate, a secondary pressure-transmitting member surrounding said spring and having inclined friction-faces at one end and adapted to engage the plate at the opposite end, and wedge-blocks located in the chambers formed by the inclined faces on the follower and secondary transmitting member and the follower-plate at that end of the device, whereby inward movement of either plate will move the follower in a direction to compress the spring; substantially as described.

6. In a draft and buffing rigging, the com bination with oppositely located followerplates, and a secondary pressure-transmitting member in the form of a casing interposed between and adapted to be moved by one of chambers and a spring confined between the follower and plate at the opposite end of the device; substantially as described.

said plates and having at one end internal inclined friction-faces, of a follower mounted to move in said secondary pressure-transmitfaoes, said faces, the faces on the said membet and the plate at that end forming angular chambers, wedge-blocks located in said Witnesses:

A. P. DENNIS, A. \V. TAYLOR.

ting member and having inclined frict-ion- I RICHARD D. GALLAGHER, JR.

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